Ticker · CUSIP 13100M509
Holders (tracked)
12
Combined shares
3,587,836
Combined value
$189.90M
Last close
$50.15
Quarter
2025Q4
Price · 1Y$50.15+16.31 (+48.20%)H $68.42 · L $33.25 · Avg Vol 821K
$40.00$50.00$60.00$70.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
12112024Q12025Q4
Price is -5.3% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

20 events
  1. +124,516 shares · 2025Q4
    Position
  2. −19,864 shares · 2025Q4
    Position
  3. −3,906 shares · 2025Q4
    Position
  4. −12,779 shares · 2025Q4
    Position
  5. +1,300 shares · 2025Q4
    Position
  6. −523,006 shares · 2025Q4
    Position
  7. −545,040 shares · 2025Q4
    Position
  8. −19,734 shares · 2025Q4
    Position
  9. +29,642 shares · 2025Q4
    Position
  10. +202,800 shares · 2025Q4
    Position
  11. −210,160 shares · 2025Q3
    Position
  12. −6,524 shares · 2025Q3
    Position
  13. −159,863 shares · 2025Q3
    Position
  14. +6,024 shares · 2025Q3
    Position
  15. −162,318 shares · 2025Q3
    Position
  16. +139,672 shares · 2025Q3
    Position
  17. −282,204 shares · 2025Q3
    Position
  18. +1,182,878 shares · 2025Q3
    Position
  19. +35,894 shares · 2025Q3
    Position
  20. +23,200 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CALX…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
AQR Capital Management2016Q1$38.21+31.2%$1.8M
Paul Tudor Jones (Tudor Investment)2018Q4$39.25+27.8%$6.2M
Izzy Englander (Millennium Mgmt)2016Q1$41.03+22.2%$72.3M
Two Sigma Investments2016Q1$42.74+17.3%$981K
Renaissance Technologies2016Q1$49.44+1.4%$23.3M
D.E. Shaw & Co.2016Q1$49.74+0.8%$1.9M
Wellington Management2018Q3$50.71-1.1%$32.1M
Ken Griffin (Citadel Advisors)2016Q3$53.51-6.3%$963K
Ken Griffin (Citadel Advisors)2016Q3$53.51-6.3%$963K
Ken Griffin (Citadel Advisors)2016Q3$53.51-6.3%$963K
Ray Dalio (Bridgewater Associates)2025Q3$57.55-12.9%$3.3M
T. Rowe Price2020Q4$60.51-17.1%$34.5M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions1
Trimmed6
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
15
$5.60B
2022Q2
12
$8.07B
2022Q3
14
$674.8M
2022Q4
15
$728.1M
2023Q1
13
$601.4M
2023Q2
13
$554.8M
2023Q3
13
$452.9M
2023Q4
13
$426.2M
2024Q1
11
$388.3M
2024Q2
12
$411.9M
2024Q3
11
$77.4M
2024Q4
12
$106.6M
2025Q1
12
$89.9M
2025Q2
12
$214.0M
2025Q3
11
$268.5M
2025Q4
12
$189.9M

Who owns CALX

12 super-investors · 2025Q4
Tracked stake
3.59M
shares
Combined value
$190M
% of shares outstanding
shares-out unknown
Quarter action mix
New1Added3Trim8
#ManagerSharesValue
1Izzy Englander
Millennium Mgmt
1.44M$76M
2T. Rowe Price688.2K$36M
3Wellington Management639.7K$34M
4Renaissance Technologies463.6K$25M
5Paul Tudor Jones
Tudor Investment
124.5K$7M
6Ray Dalio
Bridgewater Associates
65.5K$3M
7Ken Griffin
Citadel Advisors
45.8K$2M
8D.E. Shaw & Co.38.7K$2M
9AQR Capital Management36.8K$2M
10Two Sigma Investments19.6K$1M
11Ken Griffin
Citadel Advisors
19.2K$1M
12Ken Griffin
Citadel Advisors
4.2K$222K

Recent moves

20 transactions
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